Cap for a caulk gun cartridge



FIG. 1 is a front view of the cap for a caulk gun cartridge showing my new design;

FIG. 2 is a side view of the cap for a caulk gun cartridge;

FIG. 3 is a back view of the cap for a caulk gun cartridge; and,

FIG. 4 is a partial section of the cap for a caulk gun catridge taken at cut-line 4—4 of FIG. 1. 

The ornamental Design for a cap for a caulk gun cartridge, as shown and described. 